Breast texture in manuelbastioni is black
In order to solve your problem permanently you have to edit preferences.py file in /home/your_home_folder/.config/blender/2.81/scripts/addons/MB-Lab-1_7_5 folder:

from:

  use_censors = bpy.props.BoolProperty(
        name='censors',
        description="Use censors to cover genitals and breasts",
        default=True 
    )


to

  use_censors = bpy.props.BoolProperty(
        name='censors',
        description="Use censors to cover genitals and breasts",
        default=False
    )


hope this helps